@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid}}}.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.absolute{position:absolute}.relative{position:relative}.float-right{float:right}.clear-both{clear:both}.container{width:100%}.mx-auto{margin-inline:auto}.block{display:block}.flex{display:flex}.hidden{display:none}.w-1\/3{width:33.3333%}.max-w-none{max-width:none}.grow{flex-grow:1}.transform{transform:var(--tw-rotate-x,)var(--tw-rotate-y,)var(--tw-rotate-z,)var(--tw-skew-x,)var(--tw-skew-y,)}.list-disc{list-style-type:disc}.items-center{align-items:center}.border{border-style:var(--tw-border-style);border-width:1px}.border-l-4{border-left-style:var(--tw-border-style);border-left-width:4px}.text-center{text-align:center}.italic{font-style:italic}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,ease);transition-duration:var(--tw-duration,0s)}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,ease);transition-duration:var(--tw-duration,0s)}@media (hover:hover){.hover\:underline:hover{text-decoration-line:underline}}:root{--bg:beige;--fg:#0f172a;--muted:#475569;--primary:#2563eb;--accent:#ea580c;--card:#fff;--border:#e2e8f0;--shadow:0 1px 2px #0206170f,0 8px 24px #0206170f;--nav-bg:#222;--nav-fg:#fff;--link-hover-color:#8b0000}[data-theme=dark]{--bg:#0b1220;--fg:#e5e7eb;--muted:#94a3b8;--primary:#60a5fa;--accent:#f59e0b;--card:#0f172a;--border:#1f2937;--shadow:0 1px 2px #0000004d,0 8px 24px #00000040;--nav-bg:#222;--nav-fg:#fff;--link-hover-color:#ff7b7b}*{box-sizing:border-box}html{scroll-behavior:smooth}html,body{height:100%}body{background:var(--bg);color:var(--fg);text-rendering:optimizeLegibility;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,Microsoft YaHei,PingFang SC,Hiragino Sans GB,Helvetica Neue,Arial,sans-serif;line-height:1.7}.container{width:min(1200px,92vw);margin:0 auto}.site-header{z-index:10;-webkit-backdrop-filter:saturate(180%)blur(8px);backdrop-filter:saturate(180%)blur(8px);background:var(--nav-bg);border-bottom:1px solid var(--border);position:sticky;top:0}.site-header .container{width:100%;margin:0;padding:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;min-width:0;padding:6px 0;display:flex}.brand{align-items:center;gap:10px;display:flex}.site-title{color:#fff;font-size:18px;font-weight:700}.nav{flex-wrap:nowrap;gap:8px;min-width:0;max-width:100%;margin-left:auto;display:flex;overflow:visible}.nav a{color:var(--nav-fg);letter-spacing:.5px;white-space:nowrap;border-radius:8px;padding:6px 12px;font-family:Merriweather,serif;font-size:14px;font-weight:700;line-height:1;text-decoration:none}.site-footer{background:var(--nav-bg);color:var(--nav-fg);margin-top:40px;padding:20px 0}.footer-inner{justify-content:space-between;align-items:center;display:flex}.footer-links a{color:var(--nav-fg);margin-left:20px;text-decoration:none}.nav-more-toggle{display:none}.nav-toggle{border-left:8px solid #0000;border-right:8px solid #0000;border-top:10px solid var(--nav-fg);cursor:pointer;width:0;height:0;margin-left:8px;display:inline-block}.nav-panel{z-index:9;background:var(--card);border-bottom:1px solid var(--border);box-shadow:var(--shadow);padding:16px 0;display:none;position:fixed;top:52px;left:0;right:0}.nav-more-toggle:checked~.nav-panel{display:block}.nav a:hover,.nav a:focus{background:var(--nav-fg)}@supports (color:color-mix(in lab, red, red)){.nav a:hover,.nav a:focus{background:color-mix(in oklab,var(--nav-fg),transparent 92%)}}.nav a:hover,.nav a:focus{outline:none}.theme-toggle{border:1px solid var(--border);background:var(--card);color:var(--fg);cursor:pointer;box-shadow:var(--shadow);border-radius:10px;margin-left:4px;padding:8px 10px}.theme-toggle:hover{filter:brightness(1.03)}.hero{padding:40px 0 24px}.hero h1{letter-spacing:.2px;margin:0 0 8px;font-size:clamp(24px,3.8vw,34px)}.hero p{color:var(--muted);margin:0}.hero .container{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:40vh;display:flex}.hero-divider{background-image:linear-gradient(90deg,#0000,#0000001a,#0000);border:0;height:1px;margin:0}[data-theme=dark] .hero-divider{background-image:linear-gradient(90deg,#0000,#ffffff1a,#0000)}.section{padding:48px 0}.section-head h2{margin:0 0 10px;font-size:clamp(20px,3.4vw,28px)}.section-desc{color:var(--muted);margin:0 0 16px}.topic{grid-template-columns:minmax(0,1fr) 260px;gap:24px;display:grid}.topic-grid{grid-template-columns:minmax(0,1fr) 300px;gap:24px;display:grid}.topic-content{min-width:0}.topic-sidebar{align-self:start;position:sticky;top:80px}.topic-sidebar .topic-block ul a{color:var(--primary);text-decoration:none;transition:color .2s}.topic-sidebar .topic-block ul a:hover{color:var(--link-hover-color);text-decoration:underline}@media (max-width:960px){.topic,.topic-grid{grid-template-columns:1fr}}.content-col{gap:20px;display:grid}.sidebar-col{justify-self:end;position:relative}.topic-block{background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:24px}.content-col h2{font-size:clamp(22px,3.8vw,30px)}.content-col .topic-block p{font-size:16px}.home-topic-grid{grid-template-columns:minmax(0,1fr) 280px;align-items:center;gap:24px;display:grid}.home-topic-media .figure{margin:0}@media (max-width:768px){.home-topic-grid{grid-template-columns:1fr}}.figure{margin:12px 0 18px}.figure .media{aspect-ratio:16/9;border:1px solid var(--border);box-shadow:var(--shadow);background:var(--primary);border-radius:12px}@supports (color:color-mix(in lab, red, red)){.figure .media{background:color-mix(in oklab,var(--primary),transparent 90%)}}.figure .media{place-items:center;display:grid}.figure .media img{-o-object-fit:cover;object-fit:cover;border-radius:12px;width:100%;height:100%;display:block}.figure figcaption{color:var(--muted);margin-top:8px;font-size:13px}.toc{width:240px;font-size:14px;line-height:1.6;position:sticky;top:80px}.toc h3{margin:0 0 6px;font-size:15px}.toc ul{gap:6px;margin:0;padding:0;list-style:none;display:grid}.toc a{color:var(--fg);border-radius:8px;padding:6px 8px;text-decoration:none}.toc a:hover{background:var(--primary)}@supports (color:color-mix(in lab, red, red)){.toc a:hover{background:color-mix(in oklab,var(--primary),transparent 92%)}}.triangle{gap:20px;display:grid}.triangle-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.card-link{background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow);color:var(--fg);text-align:center;border-radius:14px;padding:16px;text-decoration:none;display:block}.card-link h3{margin:0 0 6px;font-size:18px}.card-link p{color:var(--muted);margin:0;font-size:14px}.article-nav{border-top:1px solid var(--border);margin-top:32px;padding-top:24px}.article-nav .nav-back{margin-bottom:24px}.article-nav .nav-prev-next{justify-content:space-between;gap:16px;display:flex}.article-nav a{color:var(--primary);font-weight:600;text-decoration:none}.article-nav a:hover{text-decoration:underline}.pos-center{grid-column:2}.pos-left{grid-column:1}.pos-right{grid-column:3}@media (max-width:640px){.triangle-row{grid-template-columns:1fr}.pos-center,.pos-left,.pos-right{grid-column:auto}}.site-footer{border-top:1px solid var(--border);margin-top:20px}.footer-inner{align-items:center;gap:10px;padding:20px 0;display:flex}.footer-links{gap:12px;margin-left:auto;display:flex}.footer-links a{color:var(--muted);text-decoration:none}:focus-visible{outline:2px solid var(--primary)}@supports (color:color-mix(in lab, red, red)){:focus-visible{outline:2px solid color-mix(in oklab,var(--primary),#000 20%)}}:focus-visible{outline-offset:2px}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}
@font-face{font-family:Merriweather;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(../media/02046ca7e906ed9f-s.78def622.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Merriweather;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(../media/6bbcb5b36acd717c-s.656fbe30.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Merriweather;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(../media/0797a9ffe47acb65-s.a9cc7c2a.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Merriweather;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(../media/7c2c7251ac640798-s.d6988a53.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Merriweather;font-style:normal;font-weight:400;font-stretch:100%;font-display:swap;src:url(../media/248e1dc0efc99276-s.p.8a6b2436.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Merriweather;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(../media/02046ca7e906ed9f-s.78def622.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Merriweather;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(../media/6bbcb5b36acd717c-s.656fbe30.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Merriweather;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(../media/0797a9ffe47acb65-s.a9cc7c2a.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Merriweather;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(../media/7c2c7251ac640798-s.d6988a53.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Merriweather;font-style:normal;font-weight:700;font-stretch:100%;font-display:swap;src:url(../media/248e1dc0efc99276-s.p.8a6b2436.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Merriweather Fallback;src:local(Times New Roman);ascent-override:80.59%;descent-override:22.36%;line-gap-override:0.0%;size-adjust:122.09%}.merriweather_59a5ad8b-module__rPgWmG__className{font-family:Merriweather,Merriweather Fallback;font-style:normal}